From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Tue, 30 Aug 2022 09:34:19 +0200 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1oSvlL-001U4f-OG for lore@lore.pengutronix.de; Tue, 30 Aug 2022 09:34:19 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oSvlK-0001lB-Jx for lore@pengutronix.de; Tue, 30 Aug 2022 09:34:19 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:From:In-Reply-To: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=m6GrCkXSvg4wkz5ylofB6kCjZXr1F2MQsa1OpOySNDE=; b=W3HO1E9USIsY4S2b1jaWdpNCFK 7Pvq5ij61MKElo3d56jtnXXz6Nppx5lKK04vD0hHVdOuFtTi/r9a6vOBKwsdpEhLTgRrByzT007AI vSj4ryPJmVAW5klMZgcsFNRtfS3lQRknQ9EZMGvAKrHqeyUqSP3/m9NocouD23PRWaALiJ2U1de7s 5RKdKnqI/hglmrlTHNM8pef9hcjn+lmQaxmlNr1cslg2xHgJ5EfDuOd0m3Tm5ZZTgHq+An9p4m2X9 frhidZWrlJbtXfZ8UNOarCmm5WX1Bi9tWBZyY5N+AjZ+pO+L8evcohp+eB9r/pHYWDLe673Meth3J Ukq4+3Kg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSvjz-00EmNE-K2; Tue, 30 Aug 2022 07:32:55 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSvju-00EmL8-GF for barebox@lists.infradead.org; Tue, 30 Aug 2022 07:32:52 +0000 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oSvjs-0001ZM-T5; Tue, 30 Aug 2022 09:32:48 +0200 Received: from sha by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1oSvjs-00082K-Ka; Tue, 30 Aug 2022 09:32:48 +0200 Date: Tue, 30 Aug 2022 09:32:48 +0200 To: Ahmad Fatoum Cc: barebox@lists.infradead.org, lst@pengutronix.de, ukl@pengutronix.de Message-ID: <20220830073248.GF24324@pengutronix.de> References: <20220818051955.2088238-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220818051955.2088238-1-a.fatoum@pengutronix.de> X-Sent-From: Pengutronix Hildesheim X-URL: http://www.pengutronix.de/ X-Accept-Language: de,en X-Accept-Content-Type: text/plain User-Agent: Mutt/1.10.1 (2018-07-13) From: Sascha Hauer X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220830_003250_566499_5BBB105D X-CRM114-Status: GOOD ( 25.22 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-3.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH 00/10] Add new feature controller framework X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) Hi Ahmad, On Thu, Aug 18, 2022 at 07:19:45AM +0200, Ahmad Fatoum wrote: > The i.MX8MM exists in a Lite variant with no VPUs as well as Solo and > Dual variants with one or two cores respectively instead of the default > four. For i.MX6, we had a manual fixup taking care of deleting the > excess CPUs, but for e.g. the i.MX8MP, we have fuses for the M7, VPUs, CAN, > CAN-FD, ISPs, NPU, ... etc. Describing all that in the DT is overly verbose > as we need to take care not to rely on specific device node names that > should be disabled. There has been an upstream attempt to get a binding > for U-Boot to act on: > > https://lore.kernel.org/all/20220324042024.26813-1-peng.fan@oss.nxp.com/ > > This was refused by the DT maintainer, because any solution to this > problem should also be flexible enough to cover the case of partitioning > devices between the secure and normal world. > > There's a patch series upstream to describe a domain-controller binding > that allows a hypervisor to partition devices into domains. With the > naming generalized, this fits nicely the use case of gating devices > behind specific features: > > https://lore.kernel.org/all/3ca7cd75-4b62-2380-adb0-646bbeb647a2@pengutronix.de/ > > This series does that. See the first two commit messages for details. > We use a barebox, prefix as the naming isn't set in stone, but the intention > is to drop the prefix and potentially rename once an upstream binding is > approved. I am fine with this series. Is this still the way you want to have it merged or do you have an update? Sascha -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |